/Engine/Source/Editor/PIEPreviewDeviceProfileSelector/Public/PIEPreviewDeviceProfileSelectorModule.h
Create PieWindow Ref
virtual [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< [SWindow](API\Runtime\SlateCore\Widgets\SWindow) > CreatePIEPreviewDeviceWindow ( FVector2D ClientSize, [FText](API\Runtime\Core\Internationalization\FText) WindowTitle, EAutoCenter AutoCenterType, FVector2D ScreenPosition, [TOptional](API\Runtime\Core\IO\TOptional)< float > MaxWindowWidth, [TOptional](API\Runtime\Core\IO\TOptional)< float > MaxWindowHeight )